Your connection with this site is dangerous
Dont enter any private informations on this site (for example credit card numbers), because attachers can have access to it.
Identity of this site was not verify.
Certificate is untrusted.
More info
After clicking to “More info”, Apple manual is loaded.
I made several additional tests on Apple equipment which never log-in to this site.
First, I change HTTPS port to “ordinary” that is 443. So URL now is https://mackowiakp-nano.ddns.net
iPad (new one!) - does not work with this site both using Safari and Chrome.
MacBook - Safari does not work, Chrome works correctly.
All other platforms works without problem on all available browsers.